Malicious PDF — malware analysis report

Static analysis result for SHA-256 e290201038198a03…

MALICIOUS

PDF

43.0 KB Created: 2020-07-23 14:38:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 373a74c19d6b17611236b92e00fa7b18 SHA-1: 256bfd806e02dbd56c701ead9906599497ede5da SHA-256: e290201038198a0347f6d411e82af89e304e4dbf206a7a6899ad946f0e861c61
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm with numerous external links, including one pointing to known malicious redirector infrastructure. The ML classifier strongly indicated maliciousness. The document body appears to be corrupted or obfuscated, preventing a clear understanding of its intended lure, but the presence of a malicious redirector URL is a high-confidence indicator of malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=ionic+compounds+naming+worksheet In PDF document text
    • http://files.modernhomebuyers.us/uploads/1/3/0/7/130738524/3024126.pdfIn PDF document text
    • http://files.steephill22.com/uploads/1/3/0/9/130969817/bufifotijo_vitoduk.pdfIn PDF document text
    • http://files.caboolturetouch.org/uploads/1/3/1/3/131384602/wumesitutesame_nagamojaf_vugav.pdfIn PDF document text
    • http://files.healthplexfamilyclinic.com/uploads/1/3/1/8/131872032/7059517.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/38453763201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8692/1376/files/15701598966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5226/1795/files/10118415450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/50940349245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1806/7866/files/37858223397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1342/2753/files/farafowuwezemegoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xizujebekox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/jaketerilupaniko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6049/4490/files/14653597609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/72975400919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2008/2590/files/50288093794.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C14 5432 bytes
SHA-256: 4e9cd1125dbb9e82f2fd333053fa682d30df744d96a4efc3c049ae8eaa4e4b04
font_01_sfnt_off00007e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E64 9560 bytes
SHA-256: 289de28a0302124e95ede985da2f1b571b61696f46ea3812b606e88a6caa8caf

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